MAX491EESD+T

MAX491EESD+T is a full duplex, low-power transceiver for RS-485 and RS-422 communications in harsh environments. Each driver output and receiver input is protected against ±15kV electro-static discharge (ESD) shocks, without latchup. The part contains one driver and one receiver. Drivers are short-circuit current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places their outputs into a high-impedance state. The receiver input has a fail-safe feature that guarantees a logic-high output if the input is an open circuit. It is used in applications such as low-power RS-485 transceivers, low-power RS-422 transceivers, level translators, transceivers for EMI-sensitive applications, and industrial-control local area networks.

• 2.5Mbps data rate, receiver/driver enable
• 300μA typical quiescent current at (VCC = 5V ±5%)
• 32 number of transmitters on bus
• Input current is ±2µA maximum at (VCC = 5V ±5%)
• Receiver input hysteresis is 70mV typical at (VCM = 0V, VCC = 5V ±5%)
• Driver rise or fall time is 20ns typical at (RDIFF = 54ohm, CL1 = CL2 = 100pF)
• Driver output skew to output is 5ns typical at (RDIFF = 54ohm, CL1 = CL2 = 100pF)
• Differential receiver skew is 5ns typical at (RDIFF = 54ohm, CL1 = CL2 = 100pF)
• Receiver short-circuit current is 95mA max at (0V ≤ VO ≤ VCC, VCC = 5V ±5%)
• Operating temperature range from -40°C to +85°C, 14-lead SO package

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party